Vegetarian food

Vegetarian FODMAP

How do you follow a vegetarian FODMAP diet? It’s not entirely easy, but it’s definitely possible with some research and creativity! Here are our best tips for those following a vegetarian FODMAP diet and looking to optimize their intake of protein, iron, and nutrients.

How can you eat a vegetarian diet that is FODMAP-friendly?

Ok, a vegetarian or vegan diet and FODMAPs aren’t exactly best friends when it comes to certain food choices. Many vegetarian substitute products contain FODMAPs and therefore don’t work. This mainly applies to soy products and legumes (peas, beans, and lentils). For those following a vegetarian FODMAP diet, it’s especially important to start reintroducing foods so that the intake doesn’t become too restricted.

Vegetarian substitute products

The store shelves are overflowing with meat substitutes. Some are FODMAP-friendly, while others are not. Generally speaking, quorn, tempeh, and seitan are allowed. Just be careful that the products don’t contain onion or garlic. Soy is usually not permitted because it’s often made from whole soybeans, which means the product contains FODMAPs in the form of oligosaccharides. Some products contain pure soy protein, which is okay. Tofu is usually fine since the fibers in soy are water-soluble and are removed during the pressing process. It’s a good idea to start with a small amount to test your tolerance.

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Protein needs on a vegetarian FODMAP diet

It’s more of a myth that we need to consume a lot of extra protein unless you’re training a lot, and by that, I mean heavy strength training almost every day. Therefore, it’s better to ensure you’re getting your protein through your diet. The average protein requirement is 0.8 g/kg of body weight, which means 56 g per day for someone weighing 70 kg. There are tables where you can see how much protein different foods contain. If you eat dairy products and eggs daily, you’ll get your protein from those sources. If you’re eating a fully vegan diet, it’s important to know how to combine different vegetarian foods, such as beans and rice in meals, to ensure you’re getting all the building blocks of protein that your body needs.

Protein-rich vegetarian low-FODMAP foods during the elimination phase:

  • Quinoa
  • Edamame beans
  • Tofu
  • Rice in all varieties, preferably whole grain and brown rice
  • Buckwheat, teff, and oats
  • Canned lentils
  • Quorn
  • Dairy products
  • Eggs

Protein-rich vegetarian low-FODMAP foods during reintroduction:

  • Mung beans
  • Black beans
  • Canned chickpeas

Iron needs on a vegetarian FODMAP diet

Meeting the body’s iron needs can also be a challenge on a vegetarian diet, as red meat is a significant source of iron. For those who follow a vegetarian diet while also adhering to FODMAP, it’s important to pay extra attention to iron intake. Since legumes are good sources of iron but can be tough for those with IBS, it’s crucial to choose wisely.

Iron-rich vegetarian low-FODMAP foods

  • Pumpkin seeds
  • Mung beans
  • Lentils
  • Spelt flour
  • Sesame seeds
  • Oats and oat bran
  • Blueberries
  • Tofu
  • Sunflower seeds
  • Dark chocolate (!)

Sofia Antonsson 
Reg. Dietitian, Belly Balance

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